Castle Bluff Energy CenterPlanned
St. Louis County, Missouri · EIA plant ID 67576 · Operator: Union Electric Co - (MO)
648 MW planned (Natural Gas Fired Combustion Turbine), first expected Oct 2027 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 216 | 175 | planned Oct 2027 | Planned | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 216 | 175 | planned Oct 2027 | Planned | — | coming soon |
| 3 | Natural Gas Fired Combustion Turbine | GT | 216 | 175 | planned Oct 2027 | Planned | — | coming soon |
Owner / operator
Operator: Union Electric Co - (MO). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Meramec | retired | 0 km |
| Waterloo | 38 MW | 17.1 km |
| Anheuser-Busch St Louis | 26 MW | 24.4 km |
| SCS American Bottoms 009885 Sauget, LLC | 2 MW | 25 km |
| Millstadt IL 1, LLC | 3 MW | 26.9 km |
| Renewable Energy Center at BJH | 2 MW | 27 km |